The junior indoor trainer is available from child product specialist, The Kids Window of London. It's said to be suitable for children aged three to nine.
"Introduced in time for Christmas, the bikes are the latest in a series of fitness products, such as trampolines and treadmills, we're promoting to encourage children away from their computer games and into healthier pursuits," said Jason Lewis, director of The Kids Window.
The bike ships with an-board computer to measure time elapsed, distance pedalled and the amount of energy used.
"Although kids used to play outside until dark, today's children regularly stay indoors for reasons including safety and convenience," said Lewis.
The bike costs £79.99.
So, put the nippers in front of the telly and only turn on CBBC while the kids are pedalling.